Terminal hub for the burners of electric ranges



April 1,1924. I 1,488,607

' R. H. M INNES TERMINAL HUB FOR THE BURNERS OF ELECTRIC RANGES I Filed Sept. 14 1923 Patented Apr. 1, 1924.

UNITED STATES PATENT OFFICE.

ROBERT H. TFTAOINNES, OF HAMILTON, ONTARIO, CANADA, ASSIGNOR TO D. MOORE COMPANY, LIMITED, 0)? HAMILTON, ONTARIO, CANADA.

TERMINAL HUB FOR THE BURNER-S 013 ELECTRIC RANGES.

Application filed September 14, 1923.

To aZZ whom it may concem:

Be it known that Roenn'r H. MACINNES, a subject of the King of Great Britain, residing at Hamilton, in the county of VVentworth and Province of Ontario, Canada, has invented certain new and useful Improvernents in Terminal Hubs for the Burners of Electric Ranges, of which the following is a specification.

My invention relates to improvements in terminal hubs for the burners of electric ranges and consists essentially of a refractory insulation hub partially recessed into the bottom surface of the burner, and through the core of which extends a conductor bolt forming the terminal of the lead wire; a bearing shoulder formed upon the hub, and a cap adapted to fit over the terminal and suitably grooved to fit over the bearing shoulder which together with said cap constitutes a bearing for the lead Wire spaced from its terminal.

The principal objects of the invention are to provide a strong and substantial terminal for the lead wires of an electric burner with the pro i ion of a bearing for the load wires a suitable distance from their terminals and at point where they are insulated and not st ipped at their ends where attached to the terminals, to avoid breaking by flexing at their point of connection with the terminals.

A further object is to provide means for protection oi the terminal so that nothing of a foreign nature can come in contact therewith.

A still ther object is to provide such a device which may be readily removed for inspection or replacement of the parts if required.

Another object is to provide a device of the class described which will be simple, durable, eflicient, and inexpensive to manufacture.

These, together with other objects may be attained by the construction, combination, and arrangement of the parts as will be hereinafter more fully described, illustrated in the accompanying drawing, and ointed out in the claims hereunto appended Referring to the drawings:

Figure 1 is a bottom View of a, portion of a burner showing the terminal hub with the cap removed;

Serial No. 662,709.

Figure 2 is a bottom view of a portion of a burner showing the terminal hub with the cap in place;

Figure 3 is an enlarged cross sectional side elevation of a portion of a burner in inverted position showing the hub also in cross section; and,

Figure 4. is a side elevation of a portion of a burner and the hub in inverted position.

Similar reference characters refer to simi lar parts throughout the several views.

The portion of the electric burner to which the terminal hub is secured is indicated 0n the drawings by A, and the hub by B. The burner is recessed as indicated by 2.

in Figure 3 to receive portion of the hub, such recess being irregularly formed and the adjoining surface of the hub being correspondingly formed so as to prevent rotary movement of the latter upon its axis. A terminal bolt 3 extends through the burner A from one of the resistance wiring grooves 4:; and through the core of the hub B, and a thimble shaped cap 0 is fitted to the outer surface of said hub and through the core of which also extends said terminal bolt. The outer end of said cap is recessed as indicated by C" to contain a suitable not 5 which is threaded on the end of the terminal bolt 3 to tighten the entire assembly. Upon the outer surface of the hub B is formed a bearing shoulder G and the cap C is correspondingly grooved to fit it, as favorably shown in Figure 4. In the outer surface of the shoulder 6 is formed a groove which together with a similar groove in the adjoining surface of the cap C constitutes an outlet 7 and bearing for the lead wire 8 which passes therethrough and is secured to the terminal bolt 3 by the nuts 9.

By so forming a bearing for the lead wire spaced from its actual terminal, any possible flexing of the lead wire will not tend .to loosen it or break it away from the terminal.

The end of the resistance wiring 10 is brought through holes 11 in the burner A from the grooves i in the opposite side thereof, and carried along grooves 13 in the bottom of the burner from whence it is taken through small holes l i in the hub and secured to the terminal bolt 3, as shown in F' ure 3.

here has thus been provided a simple and eificient device of the class described and for the purpose specified.

Having now fully described my invention, what I claim and desire to secure by Letters Patent, is

1. In a terninal hub of the class specified, the combine ion with an electric burner, of a refractory insulation huh partially recessed into the burner and having a core a hollow cap of refractor insulation material positioned against the outer surface or said hub and having a core in the head portion thereof, a terminal bolt passed through the burner and through the cores in said hub and cap, said huh and CL p having jointly a passage for a lead wire to the terminal bolt, and jointly forming a hearing therefor.

2. In a terminal hub of the class specified, the combination with an electric burner, of av refractor; insulation huh secured to the burner, a hollow cap of refractory insulation material reinorably secured to the hub, a terminal confined Within said cap and coinrnunicating with a resistance Wiring, said hub and cap having jointly a passage for a lead Wire to said tcrrninal and jointly forming a hearing therefor.

3. In a terminal hub of the class specified, the combination with an electric burner of a refractory insulation huh secured to the burner, a hollow cap of rcfi 'ory insulation material reinoi'ahh' secured to the hub, a terminal confined Within said cap and corninunicating with a resist nce Wiring, and a hearing shoulder formed on the edge of said huh and l.ia-;ing a 'rooie in its outer surface, said cap being urcli :d in its side to con l'orinto said hearing shoulder, the arched portion of the cap having a groove which jointly with the to irerlr iuentituied roorc forms a pas sage a lead Wire, to id terminal. said. shoulder jointly -with h airing for said lead u'i e.

In testimony whereof I have ailixed my signature.

cap forming a ROBERT ll. MACINNEF-K \Vitnesses H. G. Harmer, A. D. 

